Elfin-EW11A-Kit3 (Wi-Fi)

🔌📶 Elfin EW11A – RS485 → Modbus TCP (Wi-Fi)

Elfin EW11A is a converter serving as a communication bridge between devices with RS485 (Modbus RTU) interface and a superior system using Modbus TCP via Wi-Fi connection. It enables integration of inverters, electricity meters, wallboxes, and other third-party technologies into the SHE system, where all control logic is implemented through Quick Apps.

💼 Business presentation

Elfin EW11A is a key infrastructure element in projects where it is not possible to run LAN cable and it is necessary to use wireless Wi-Fi connection. The converter is long-term used in the SHE system and its communication is tested in real-world installations. It is suitable for installations where emphasis is placed on connection flexibility without need for cabling. The converter itself does not control any technologies, but creates the necessary communication layer, without which it would not be possible to integrate technologies into the SHE system.

🧩 Role in SHE system

Elfin EW11A is a necessary component of the SHE system in cases where the connected technology does not support Modbus TCP communication and wired LAN connection is not available. The converter is essential in particular for communication with inverters, wallboxes, the EX01 module, and other devices using the RS485 bus. Without this converter, it would not be possible to fully integrate and control these technologies using SHE QA.

⚙️ Key properties

• Conversion of RS485 (Modbus RTU) → Modbus TCP communication
• Connection to Wi-Fi network
• Power supply 5–36 V DC
• Assembly on 35 mm DIN rail
• Proven communication stability in real installations

🔌 Conditions of operation

• Available local Wi-Fi network
• All devices must be in the same local network (control unit, converter, and connected technology) to ensure mutual communication
• Power supply 5–36 V DC
• Device with RS485 communication support (Modbus RTU)